セパレータおよび非水電解質電池、ならびに電池パック、電子機器、電動車両、蓄電装置および電力システム

摘要

A separator has: a substrate including a porous film; and a surface layer which is provided on at least one surface of the substrate, which includes a vinylidene fluoride-tetrafluoroethylene-hexafluoropropylene copolymer, and which has a plurality of minute pores.